Law of Sines and Cosines

Mathematics
Tutor: None Selected Time limit: 1 Day

In triangle ABC, if B=14.4 degrees, C=25.8 degrees, and a=315cm, find all missing parts.

a.A=139.8 degrees, b=121 cm, c=212 cm

b.A=140.8degrees, b=121 cm, c=211 cm

c.A=140.8 degrees, b=124 cm, c=212 cm

d.A= 139.8 degrees, b=124 cm, c=211cm

May 28th, 2015

Angle A = 180-14.4-25.8 = 139.8

as per sine rule  we know that   ;  a/sin A = b/sin B

or b = 315* sin 14.4 / sin 139.8 = 121.36

 hence correct answer is

a.A=139.8 degrees, b=121 cm, c=212 cm

May 28th, 2015

Are you studying on the go? Check out our FREE app and post questions on the fly!
Download on the
App Store
...
May 28th, 2015
...
May 28th, 2015
Dec 3rd, 2016
check_circle
Mark as Final Answer
check_circle
Unmark as Final Answer
check_circle
Final Answer

Secure Information

Content will be erased after question is completed.

check_circle
Final Answer